I've edited that file slightly, can you try it and see if it works?
ooh that has actually worked for that plugin, thanks so how can we make the others work?
For each plugin that gives that error, open the plugin php file and find:
require MYBB_ROOT.'/inc/adminfunctions_templates.php';
Replace with:
require_once MYBB_ROOT.'/inc/adminfunctions_templates.php';
You'll need to do that twice in each file, probably.
thanks for that AJS, they are working perfect now